/Engine/Plugins/Interchange/Runtime/Source/FactoryNodes/Public/InterchangeStaticMeshFactoryNode.h
Set Whether to generate the distance field treating every triangle hit as a front face. When enabled prevents the distance field from being discarded due to the mesh being open, but also lowers Distance Field AO quality.
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Interchange | Node | StaticMesh") bool SetCustomGenerateDistanceFieldAsIfTwoSided ( const bool & AttributeValue, bool bAddApplyDelegate )